Audio Amplifiers Tone Control Circuits
The answer to that depends on whether you are building or modifying an integrated amplifier or a preamp that is used with a separate power amplifier or mono block power amplifiers. Also there is no one correct answer and there can be many variations on the theme and no one can definitely say that some of them are wrong. However, there are a few don't and they will be pointed out. Volume and Balance Placement. Although I have seen it done in commercial semiconductor amplifiers I don't recommend placing the volume and balance pots one after the other in a tube amplifier. Figure 1 below shows what I am talking about. Figure 1 Diagram Showing Parasitic Capacitance Associated In my ill-informed youth I did connect a balance control pot right after a volume control. The loss of highs was obvious so I never did that again. Due to its construction a pot has quite a lot of stray capacitance to ground. This is indicated by the capacitor in red in the diagram of Figure 1. The highest im...